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{"bugzilla": {"description": "css_parser: css_parser: Arbitrary local file disclosure via Server-Side Request Forgery", "id": "2501922", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2501922"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-918", "details": ["A flaw was found in css_parser, a Ruby CSS parser. This vulnerability allows a remote attacker to perform Server-Side Request Forgery (SSRF) by providing specially crafted CSS with a base Uniform Resource Identifier (URI) option. Successful exploitation can lead to arbitrary local file disclosure, as the parser can be tricked into following redirects to local file paths."], "name": "CVE-2026-53727", "package_state": [{"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Under investigation", "package_name": "3scale-amp21/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Under investigation", "package_name": "3scale-amp22/system", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Under investigation", "package_name": "3scale-amp2/system-rhel7", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Under investigation", "package_name": "3scale-amp2/system-rhel8", "product_name": "Red Hat 3scale API Management Platform 2"}, {"cpe": "cpe:/a:redhat:red_hat_3scale_amp:2", "fix_state": "Under investigation", "package_name": "3scale-amp2/system-rhel9", "product_name": "Red Hat 3scale API Management Platform 2"}], "public_date": "2026-07-17T20:30:37Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53727\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53727\nhttps://github.com/premailer/css_parser/commit/7d2ddf0189cd54b54f378f59daefa10cb036e476\nhttps://github.com/premailer/css_parser/commit/e0a151458b2a801ae265ba420862ef8b1127b3ae\nhttps://github.com/premailer/css_parser/releases/tag/v3.0.0\nhttps://github.com/premailer/css_parser/security/advisories/GHSA-9pmc-p236-855h"], "statement": "This flaw is rated as Important because it allows for Server-Side Request Forgery (SSRF) and potential arbitrary local file disclosure. Exploitation requires an application to process attacker-controlled CSS with a `base_uri` option, which is not a default configuration in most Red Hat products. This limits the attack surface to specific deployments where `css_parser` is used in a vulnerable manner.", "threat_severity": "Important"}

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